Printing-element holder



. a! 7 I ifgfi (Z? 777 77 g June 24 1924. 3,498,939

W. s. WARNOQK PRINTING ELEMENT HQLDER,

Filed Nov. 1, 1923 /7Zz/[a0f War/Z004 1,382,151, issued Patented dune 2d, 194.

PRINTmG-ELEMENT HOLDER.

Application filed November 1, 1923. Serial No. 672,152.

To all wit-omit may concern:

Be it known that I, WALLACE S. "WAR- NOCK, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Printing- Element Holders, of which the following is a full, clear, concise, and exact description.

My invention relates to printing plate holders and has for its general object the provision of simplified mechanism entering into the construction of the holder so that the holding jaw thereof may readily be applied to a plate to be clamped thereby and maybe shifted in location to suit the location of the work to be held. 'In the structure of my prior Patent June 21, 1921, the holding jaw was provided with a stem that was pivotally connected upon and within a hollow carrier and there was mechanism within this carrier that forced movement of the jaw into clamping engagement with the printing element to be held thereby. It is one object of my invention to provide an improvement upon this mechanism for adjusting the jawfwhether or not the jaw is provided with a stem. In the preferred embodiment of my present invention the stem is omitted. A screw is mounted at one end within the carrier and at its other end has engagement or connection with the jaw. This screw swings upon its mounting in the plane of movement of the jaw, and is also rotatable upon its axis. A nut upon the screw is held from rotation by engaging an inclined guide upon and within the carrier, whereby the screw is swung as it is turned, to force movement of the jaw.

It is another object of my present invention to rovide mechanism whereby the jaw is constrained to move in a path distinct from the arcuate path that was followed by the jaw of my aforesaid patent, for example.

It is also an object of my invention to prov de means for preventing operating mechanlsm wlthin the carrier from causlng the carrier to spread and I realize this object by having the jaw embrace the carrier to a sufficient extent to accomplish the result desired.

In the preferred embodiment of the invention the screw is in the form of an upright rod having an upper threaded section rotatable upon its axis and a lower portion flexibly connected therewith and which portion is journaled to and within the carrier to turn upon an axis transverse to the axis of the threaded section of the rod. The upper end of the threaded section is flexibly coupled with the jaw and there is a guiding formation upon the carrier which engages the jaw and which is formed to constrain the jaw to move in a' oath distinct from the arcuate path of the upper end of the rod. In a flat bed press the jaw would be constrained to move in a straight line parallel with the flat face of the bed. In a rotatory press the jaw would be constrained to move in a path concentric with the form supporting cylinder. The jaw is formed with two depending ears which embrace the carrier and engage its outer sides to prevent it from spreading.

The invention will be more fully explained with reference to the accompanying drawing in which Fig. 1 is a vertical sectional view illustrating a portion of a flat bed with the preferred form of the device of my invention assembled therewith; Fig. 2 is a sectional view on line. 22 of Fig. 1; Fig. 3 is a plan view, on a small scale, illustrating one construction of fiat bed and a portion of a printing plate with a printing plate holder upon and assembled with the bed; Fig. 4 is a plan view of the structure shown in Figs. 1 and 2 butv with the printing plate omitted; Fig. 5 is a sectional View on line 5-5 of Fig. 1; and Fig. 6 is a perspective view illustrating the clamping jaw and complemental parts in separated relation.

Like parts are indicated by similar char- 1 acters of reference throughout the-different figures.

v The rinting bed or foundation 1, of any suitable shape, is desirably formed with a plurality of cylindrical holes 2, each hole being provided with an annular enlargement 3 or otherwise suitably spaced apart from the bed supporting frame of the press to receive retaining lugs 4 which project laterally from the hollow clamping jaw carriers 5, normally to prevent these carriers from being withdrawn after they are dropped into position.

In the preferred embodiment of the invention the bed is formed with channels 6 extending along the entire length of the unlarged portions of the holes and communicating therewith. When such is the construction, the carriers are dropped into the holes with the'lugs 4. in register with the channels 6 and when the lugs are passed out of the enlarged portions of the holes the carriers are turned to bring the lugs out of register withv the channels to prevent accidental withdrawal of the carriers. When the carriers are to be removed, they are turned to bring their lugs again into register with the channels.

The structure by which the clamping jaw carrier and the printing bed are assembled forms the subject also of my copending application, Serial No. 672,153, filed Novein: ber 1, 1923.

Each printing element holder includes, in addition to the carrier, the clamping jaw 7, an upright rod 8 flexibly connected with the jaw at its upper end and journaled to turn' at its lower end upon and within the carrier,

and mechanism within the carrier for forcing the movement of the jaw in the path which the jaw is constrained to follow. This screw or rod has an upper threaded section and a lower portion 9 rotatably connected with the threaded section of the screw or rod'by means of a coupling ring 10 which enters channels formed in the two portions of the rod and which channels are located in the zone of the ring. The rod section 9 is journaled upon and within the carrier upon a journal pin 11 desirably passing through the carrier and the rod section 9. The rotatable threaded section of the rod is formed tool that causes the threaded section of the rod to be turned upon the axis thereof, the coupling 10 permitting this threaded rod sectlon to. be thus turned without correspondingly turning the rod portion 9 which is journaled to turn upon'an axis that istransverse to the axis of the threaded rod section. Inclined channels 12 are formed in the opposite sides of the carrier and receive the pins or lugs 13 which project laterally from the nut 14 threaded upon the threaded section of the rod 8.

Nut 14, which is held from rotation by its lugs 13, moves bodily along the inclined channels or ways 12 as it moves along the threaded section of the rod 8 with the result that the entire rod or screw is given a swinging movement as the threaded section thereof is turned upon its 'axis. The upper end of the rod has the shape of the zoned portion of a sphere and is received within a cylindricalopening 15 in the jaw whereby the jaw and rod are flexibly coupled to permit the jaw to have movement that is'nonjaw is constrained to move in a path which depends upon the shape of the guiding structure therefor. As'illustrated, the guides 17 and the portions of the jaw structure receiving the same are perpendicular to the axis of the. carrier so that the jaw is constrained to move in a straight line and parallel with the top face of the printing block 1. It is obvious that the jaw may be otherwise directed in its movement if the printing face is of-other shape.

To prevent the'carrier from spreading as a result of the operation of the jaw, by the mechanism within the carrier, the jaw is formed with depending ears 18 to embrace the guide portions 17 of the carrier to prevent the sides of the carrier from spreading apart. 1 Any suitable means may beemployed for limiting the extent to which the carrier may be lowered. As illustrated, the carrier is formed with flaring'ears 19 which engage shoulders 20 that are formed within the.

holes in the bed that receive the carrier. The clamping jaw itself may also serve to limit the extent to which the carrier may begliollow carrier; a clamping jaw upon the carrier; an upright rod journaled at its lower end to swing upon and within the carrier and flexibly coupled at its upper end wish said jaw; and means for swinging said r0 2. A printing element holder including a hollow carrier; a clamping jaw upon the carrier; an upright rod journaled at its lower end to swing upon and within the carrier and flexibly coupled at its upper end with said jaw, said carrier having a guiding formation engaging the jaw and formed to constrain the jaw to move in a path distinct from the arcuate path of the upper end of the rod; and means for swinging said rod.

3. A printing element holder including a hollow carrier; a clamping jaw upon the carrier; an upright rod having an upper threaded section rotatable upon its axis and a lower portion movably connected therewith and which portion is journaled upon and within the carrier to turn upon an axis transverse to the axis of the threaded rod section whose upper end is flexibly coupled with said jaw; and means for swinging said rod, and operated by the threaded portion of the rod when turned.

4. A printing element holder including a hollow carrier; a clamping jaw upon the carrier; an upright rod having an upper threaded section rotatable upon its axis and having a portion movably connected therewith and which portion is journaled upon and within the carrier to turn upon an axis transverse to the axis of the threaded rod section whose upper end is flexibly coupled with said jaw, said carrier having a guiding formation engaging the jaw and formed to constrain the jaw to move in a path distinct from the arcuate path of the upper end of the rod; and means for swinging said rod and operated by the threaded portion of the rod when turned. 1

v5. A printing element holder including a hollow carrier; a clamping jaw upon the carrier; an upright rod having an upper threaded section rotatable upon its axis aniih a lower portion movably connected therewith and which portion is journaled upon and within the carrier to turn upon an axis transverse to the axis of the threaded rod section whose upper end is flexibly coupled with said jaw; and a nut upon the threaded section of the rod and engaging an inclined way that is provided upon the carrier to hold the nut from rotation and force the swinging movement of the rod as the threaded section thereof is turned upon its axis.

6. A printing element holder including a hollow carrier; a clamping jaw upon the carrier; an upright rod having an upper threaded section rotatable upon its axis and having a portion movably connected therewith and which portion is journaled upon and within the carrier to turn upon ap axis transverse to the axis of the threaded rod section whose upper end is flexibly coupled with said j aw; said carrier having a guiding formation engaging the jaw and formed to constrain the jaw to move in a path distinct from the arcuate path of the upper end of j the rod; means for swinging said rod; and a nut upon the threaded section of the rod and engaging an inclined way that is provided upon the carrier to hold the nut from rotation and force the swinging movement of the rod as the threaded section thereof is turned upon its axis. I

7 A printing element holder including a hollow carrier; aclamping jaw upon the carrier; an upright rod journaled at its lower end to swing upon and within the carrier and flexibly coupled at its upper end with said aw; said carrier having a guiding formation engaging the jaw and formed to constrain the jaw to move in a path distinct from the arcuate path of the upper end of the rod; and means for swinging said rod; said jaw embracing the carrier to prevent the carrier from spreading.

8. A printing element holder including a hollow carrier; a clamping jaw upon the car rier; an upright rod having an upper threaded section rotatable upon its axis and having a portion movably connected therewith and which portion is journaled upon and within the carrier to turn upon an axis transverse to the axis of the threaded rod section whose. upper end is flexibly coupled with said jaw; said carrier having aguiding formation engaging the jaw and formed to constrainthe jaw to move-in a path distinct from the arcuate path of the upper end of the rod; and means for swinging said rod,

operated by the threaded portion of the rod when turned, saidjaw embracing the carrier to prevent the carrier from spreading.

9. A printing element holder including a hollow carrier; a clamping. jaw upon the carrier; an upright rod having an upper threaded section rotatable upon its axis and having a portion movably connected there with and which portion is journaled upon and within the carrier to turn upon an axis transverse to the axis of the threaded rod section whose upper end is flexibly coupled with said jaw; said carrier having a guiding formation engaging the jaw and formed to constrain the jaw to move in a path distinct from the ar'euate path of the upper end of the rod; and means for swinging said rod, operated by the threaded portion of the rod in being turned, said jaw embracing the carrier to prevent the carrier from spreadmg.

10; A printing element holder including a hollow carrier; a jaw upon the carrier; and mechanism within the carrier for moving the jaw and which jaw embraces the carrier to prevent the carrier from spreadmg. 7

11. A printing element holder includin a hollow carrier; an upright rod journale at its lower end to swing upon and within the carrier; and a jaw at the upper end of the carrier and in flexible connection with said rod.

12. A printing element holder includin a hollow carrier; an upright rod journaled at its lower end to swing upon and within the carrier; and a guide for constraining the jaw to follow a path distinct from the arcuatepath of the upper end of the rod.

13. A printing element holder including a hollow carrier; a clamping jaw; .a threaded rod mounted at one end upon and within the carrier to be rotatable upon its axis and to swing and having its other end in actuating relation with the jaw; and a nut upon the rod, said carrier holdin the nut from rotation and having an inc ined portion upon which the nut moves as the threaded rod is turned whereby the rod is swung and the jaw is moved.

14:. A printing element holder including nut moves .as the threaded rod is turned whereby the rod is swung and the jaw is moved, said carrier having a guide for the jaw that constrains the jaw to follow a path that is non-coincident with the path followed by the'end of the rod that is engaged with the jaw.

15. A printing element holder lncluding a hollow carrier; a clamping jaw; a threaded rod mounted at one end upon and within the carrier to be rotatable upon its axis and to swing and having its other end at the jaw and there accessible; and a nut upon the rod and in actuating relation with the jaw, said carrier holding the nut from rotation and having an inclined portion upon which the nut moves as the threaded rod is turned whereby the rod is swung and the jaw is moved.

16. A printing element holder including a hollow carrier; a clamping jaw upon the carrier; a threaded rod mounted at 'one end upon and within the carrier to be rotata-' ble upon itsaxis and to swing and having its other end at the jaw and there accessible; and a nut upon the rod and in actuating relation with the jaw, said carrier holding the nut from rotation and having an inclined portion upon which the nut moves as the threaded rod is turned whereby the rod is swung and the jaw is moved, said carrier having a guide for the jaw that constrains the jaw to follow a path that is non-coincident with the path followed by the end of the rod that is at the jaw.

17. A printing element holder including a hollow carrier; a clampin jaw; a threaded rod mounted at one en upon and within the carrier to be rotatable upon its axis and to swing and having its other endat the jaw and there accessible; and a nut upon therod andin actuating relation with the jaw, said carrier having an inclined portion upon which the nut moves bodily as the threaded rod is turned whereby the rod is swung and the jaw is moved.

18. A printing element holder including a hollow carrier; aclamping jaw upon the carrier; a threaded rod mounted at one end upon and within the carrier to be rotatable upon its axis and to swing and having its other end at the jaw and there accessible; and a nut upon the jaw and in actuating relation with the jaw, said carrier hav ing an inclined portion upon which the nut moves bodily as the threaded rod is turned whereby the rod is swung and the jaw is moved, said carrier having a guide for the jaw that'constrains the jaw to follow a path that is non-coincident with the path followed by the end of the rod that is at the jaw. In witness whereof, I hereunto subscribe my name this 24th day of October, A. D.,

WALLACE S. WARNOCK. 

